有线/无线混合网络传输稳定性控制仿真研究

摘要

It can improve the transmission performance of network and ensure the normal operation of wired/wireless hybrid network to control its transmission stability.The control process needs judging network link condition in wired/wireless hybrid network and making self-adaptation adjustment to the transmission plan of network resource according to the decision outcome.However,traditional method makes dynamic regulation to the measurement matrix dimension of compressed sensing integrated with network congestion state to complete the transmission stability control.It cannot analyze the link state of transmission and adjust transmission plan in real time.So it reduces the control effect of transmission stability.In this paper,we proposed a control method of transmission stability in wired/wireless hybrid network based on self-adaption weighted average algorithm.Firstly,the method judged the network link state according to variation accumulation of data package arrival time interval at the receiving end.Then we set the threshold value based on delay jitter of transmission to judge different situation of packet loss.We also dynamical ly adjusted the weighted average parameter of each congestion period rate sampling according to different types of packet loss state and duration time of congestion period.Finally we fed back the adjusted parameter to transmitting end and completed the stability control effectively.The simulation results show that the method mentioned above can improve the transmission performance of wired/wireless hybrid network effectively.%对有线/无线混合网络传输稳定性控制,可以提高网络的传输性能,保障有线/无线混合网络的正常运行.进行网络传输稳定性控制时,需要要对有线/无线混合网络网络链路的状况进行判定,根据判定结果对网络资源传输方案进行自适应调整,而传统方法是融合于网络拥塞状况对压缩感知的观测矩阵维数进行动态调节,完成传输稳定性控制,无法对传输的链路状况进行分析,不能对传输方案进行实时调整,降低了传输稳定性控制的效果.提出一种基于自适应加权平均的有线/无线混合网络传输稳定性控制方法.该方法先依据接收端数据包到达时间间隔的变化累积来判断网络链路的状况,基于传输延时抖动设定阈值对网络不同的丢包情况进行判断,并根据不同类型的丢包状态和拥塞周期的持续时间动态调整各个拥塞周期速率采样的加权平均参数,并以此反馈至发送端,有效地完成了对基于有线/无线混合网络的稳定性控制.仿真结果证明,所提方法可以有效提高有线/无线混合网络的传输性能.